From: Anssi Saari <as@sci.fi>
To: Alan Cox <alan@lxorguk.ukuu.org.uk>
Cc: linux-kernel@vger.kernel.org
Subject: Re: Linux 2.4.20-pre4-ac1
Date: Fri, 23 Aug 2002 22:30:12 +0300 [thread overview]
Message-ID: <20020823193012.GA12464@sci.fi> (raw)
In-Reply-To: <1030123089.5932.26.camel@irongate.swansea.linux.org.uk>
On Fri, Aug 23, 2002 at 06:18:09PM +0100, Alan Cox wrote:
> On Fri, 2002-08-23 at 17:30, Anssi Saari wrote:
> > Audio CD writes hog system if writing at > 4x so that CPU intensive
> > stuff like watching video goes poorly, frames are dropped a lot, even
>
> Linux audio writes are currently always done PIO. Andrew Morton posted a
> patch for this which I need to dig out and merge.
I thought his patch concerns only reading audio.
Anyway, what I forgot to mention that this slowdown doesn't occur if I
plug the writer to a Promise pdc20265 or CMD649, but both of those have
the random buffer underrun problem which I understand you know about.
That's with earlier kernels, up to 2.4.19-ac4, I haven't tried them
with newer ones, but it seems it's only the VIA 686b southbridge that
has this problem. I've tried the writer on an old Pentium system too,
which has an Intel PIIX3 and no problems with that.
next prev parent reply other threads:[~2002-08-23 19:25 UTC|newest]
Thread overview: 37+ messages / expand[flat|nested] mbox.gz Atom feed top
2002-08-23 10:46 Linux 2.4.20-pre4-ac1 Alan Cox
2002-08-23 12:21 ` Erik Andersen
2002-08-23 14:06 ` Eyal Lebedinsky
2002-08-23 14:29 ` Linux 2.4.20-pre4-ac1 (this time regarding 2.5.31) Thunder from the hill
2002-08-23 14:53 ` Steven Cole
2002-08-23 15:07 ` Thunder from the hill
2002-08-23 15:52 ` Greg KH
2002-08-23 15:51 ` Linux 2.4.20-pre4-ac1 Greg KH
2002-08-23 14:59 ` Erik Andersen
2002-08-23 15:16 ` [PATCH] fix bitops.h circular dependancies Erik Andersen
2002-08-23 15:59 ` Erik Andersen
2002-08-23 15:57 ` Linux 2.4.20-pre4-ac1 Markus Plail
2002-08-23 18:16 ` Andre Hedrick
2002-08-23 16:30 ` Anssi Saari
2002-08-23 16:56 ` Markus Plail
2002-08-24 16:03 ` Anssi Saari
2002-08-23 17:18 ` Alan Cox
2002-08-23 19:30 ` Anssi Saari [this message]
2002-08-24 13:27 ` Allan Duncan
2002-08-24 13:55 ` Alan Cox
2002-08-24 14:07 ` Erik Andersen
2002-08-25 11:01 ` Tomas Szepe
2002-08-25 11:10 ` Thunder from the hill
2002-08-25 11:32 ` Thomas Molina
2002-08-25 11:45 ` Sean Neakums
2002-08-25 12:10 ` Geert Uytterhoeven
2002-08-25 12:19 ` Thunder from the hill
2002-08-25 12:25 ` Sean Neakums
2002-08-25 13:44 ` Tomas Szepe
2002-08-26 2:01 ` Rik van Riel
2002-08-25 11:41 ` Tomas Szepe
2002-08-26 0:24 ` Allan Duncan
2002-08-25 21:33 ` Henning P. Schmiedehausen
2002-08-24 17:32 ` Axel Siebenwirth
2002-08-24 17:59 ` Alan Cox
2002-08-25 4:49 ` Zephaniah E. Hull
2002-08-25 20:15 ` Adrian Bunk
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